Are these peep sites much different from the standard williams peep? I put a williams peep on my muzzie last year for my oregon blacktail hunt but kind of regretted it because all the action was in the evening and in low light I didnt care for the peep site because I couldnt see thru it. I was thinking of going back to the open sites after that experience. Nice looking muzzies guys.
There are a couple of options for in low light situations:
1. you can change the size of the peep adapter that you are using - the larger the hole the more light transmitted. I use a 0.093" adapter.
2. Plus there is an option for a 'Twilight' Aperture which helps a little bit with a Brass ring inside the aperture cup.

3. And the one that I do most often in low light - Remove the aperture and use the sight as a 'Ghost' ring aperture and when the light increases put the aperture back in.
This last one you really can not do with the NECG as the aperture helps hold the elevation control of the sight.